Blending mode for drop shadows

I often see PSD's or tutorials where people are using Multiply as blending mode for their drop shadows.

I read an article on blending modes somewhere that adviced to use Linear Burn instead of Multiply, because it gives more color to your drop shadow, ergo: more realism.

Check it our for yourself.

If you've got some more little Photoshop tips or tricks, please put them in the comments.